Originally Posted by Leonard Rouse
I see liberalism as the final evolution of Christianity--specifically, the highest and greatest (lowest and worst?) progression of the Protestant Revolution. Think of the oft-repeated quip: "What was good in Christianity wasn't new, and what was new wasn't good." Liberalism is the distillation of the new, that very essence of the faith that distinguishes Christianity from its competitors.
The jew Rothbard wrote a bunch of good stuff about this, particularly focusing on the evolution of hard-core Puritanism that founded the Northeast into social-gospelism of the type advocated by, for example, Hillary Clinton. Catholic E. Michael Jones is the best I know for tracing the history of Protestantism as morally abandoned Catholics working closely with jews.